Multifunctional crosslinking agent, crosslinked polymer, and method of making same
US-10294255-B1 · May 21, 2019 · US
Lightly crosslinked polyimides with phenylethynyl pendants for shape-memory effect and programmed enhancement in Tg and modulus
US11992995B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11992995-B2 |
| Application number | US-202217869927-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 21, 2022 |
| Priority date | Sep 30, 2019 |
| Publication date | May 28, 2024 |
| Grant date | May 28, 2024 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
The invention generally relates to shape memory films that are tri-functionally crosslinked and that comprise multiple, non-terminal, phenylethynyl moieties. In addition, the present invention relates methods of fabricating such films. Due to the improved properties of such SMPS, the SMP designer can program in to the SMP mechanical property enhancements that make the SMP suitable, among other things, for advanced sensors, high temperature actuators, responder matrix materials and heat responsive packaging.
First claim
Opening claim text (preview).
What is claimed is: 1. A sol-gel comprising a tri-functional crosslinked poly(amic acid), a tri-functionally crosslinked poly(amide-amic acid) and/or a tri-functionally crosslinked copolymer of poly(amic acid) and poly(amide-amic acid), said tri-functionally crosslinked poly(amic acid), tri-functionally crosslinked poly(amide-amic acid) and/or tri-functionally crosslinked copolymer of poly(amic acid) and poly(amide-amic acid) comprising repeat units and non-terminal, phenylethynyl moieties each of said repeat units comprising one of said non-terminal, phenylethynyl moieties. 2. A film comprising the sol-gel of claim 1 . 3. A two or three dimensional object comprising the sol-gel of claim 1 . 4. A two or three dimensional object comprising the film of claim 2 .
Assignees
Inventors
Classifications
- B29C53/005Primary
characterised by the choice of material (B29C53/36 and B29C53/56 take precedence) · CPC title
Heating or curing, e.g. crosslinking or vulcanizing {during moulding, e.g. in a mould}(cold vulcanisation B29C35/18 {; vulcanising tyres, presses therefor B29D30/0601}) · CPC title
characterised by the choice of material · CPC title
for making articles of definite length, i.e. discrete articles · CPC title
Spreading-out the material on a substrate {, e.g. on the surface of a liquid} · CPC title
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- What does patent US11992995B2 cover?
- The invention generally relates to shape memory films that are tri-functionally crosslinked and that comprise multiple, non-terminal, phenylethynyl moieties. In addition, the present invention relates methods of fabricating such films. Due to the improved properties of such SMPS, the SMP designer can program in to the SMP mechanical property enhancements that make the SMP suitable, among other …
- Who is the assignee on this patent?
- Us Gov Air Force, Us Air Force
- What technology area does this patent fall under?
- Primary CPC classification B29C53/005. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue May 28 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).